
Madelia
- County:
- Watonwan County
- County Seat:
- No
- Area (mi²):
- 1.512
- State:
- Minnesota
Madelia is a city located in Watonwan County, Minnesota. Madelia has a 2025 population of 2,358. Madelia is currently declining at a rate of -0.34% annually and its population has decreased by -1.75% since the most recent census, which recorded a population of 2,400 in 2020.
The average household income in Madelia is $87,498 with a poverty rate of 9.87%. The median age in Madelia is 34.9 years: 39.8 years for males, and 33.4 years for females.